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Finding the Fourth Proportional to 140,699.80, 210,973.14 and 50,730.26

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Solution

The fourth proportional to 140,699.80, 210,973.14 and 50,730.26 is: 76,067.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,699.80 : 210,973.14 = 50,730.26 : x
  2. Step 2: Convert to fraction form
    140,699.80/210,973.14 = 50,730.26/x
  3. Step 3: Cross multiply
    140,699.80x = 210,973.14 × 50,730.26
  4. Step 4: Simplify right side
    140,699.80x = 10,702,722,245.22
  5. Step 5: Solve for x
    x = 10,702,722,245.22/140,699.80
  6. Step 6: Final answer
    x = 76,067.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.